Scaling Nodejs Socket.io Redis Architecture

Question

I know that there are a lot of q & a and resources for scaling Nodejs Socket.io, and I read quite a lot. I am thinking of a simple cloud deployment architecture such as AWS, which I would like to test with experts here.

Is my chart correct? Is this a way to scale? If so, how can I prevent a Redis instance from a single point of failure?

Answer 1

Redis can also be scaled: http://redis.io/topics/replication

Answer 2

Redis will probably have HA mode soon , but at the same time, you can try another "repository" like MongoStore